Prospects of discovering new physics in rare charm decays

Abstract

The LHCb bounds on the branching ratio of rare decay $D^0\to {\mu }^{+}{\mu }^{-}$ and the constraints on the branching ratio of $D^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ in the nonresonant regions enable us to improve constraints on new physics contributions. Using the effective Lagrangian approach we determine sizes of the Wilson coefficients allowed by the existing LHCb bounds on rare charm decays. Then we discuss contributions to rare charm meson decay observables in several models of new physics: a model with an additional spin-1 weak triplet, leptoquark models, Two Higgs doublets model of type III, and a $Z^{\prime }$ model. Here we complement the discussion by $D^0-{\bar{D}}^0$ oscillations data. Among considered models, only leptoquarks can significantly modify Wilson coefficients. Assuming that the differential decay width for $D^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ receives NP contribution, while the differential decay width for $D^{+}\to {\pi }^{+}{e}^{+}{e}^{-}$ is Standard Model-like, we find that lepton flavor universality can be violated and might be observed at high dilepton invariant mass.

13 pages, 3 figures, typos fixed

References in corpus (13)

• Big-Bang Nucleosynthesis
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Angular Distributions of B -> K ll Decays
• $R_K$ and future $b\to s\ell \ell$ BSM opportunities
• Family non-universal Z' models with protected flavor-changing interactions
• Constraints on two-lepton, two quark operators
• The Anatomy of Z' and Z with Flavour Changing Neutral Currents in the Flavour Precision Era
• Relating D0-anti-D0 Mixing and D0 -> l+l- with New Physics
• Updated constraints on new physics in rare charm decays
• Measurement of the $D^0\to {\pi }^{-}{e}^{+}{\nu }_e$ differential decay branching fraction as a function of $q^2$ and study of form factor parameterizations
• Resonance catalyzed CP asymmetries in D -> P l+ l-
• Can we reach the Zeptouniverse with rare K and B_{s,d} decays?
• Leptoquarks in FCNC charm decays

Cited by in corpus (55)

• Physics of leptoquarks in precision experiments and at particle colliders
• One Leptoquark to Rule Them All: A Minimal Explanation for $R_{D^{(\ast )}}$, $R_K$ and $(g-2{)}_{\mu }$
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Vector leptoquark resolution of $R_K$ and $R_{D^{(\ast )}}$ puzzles
• Reconsidering the One Leptoquark solution: flavor anomalies and neutrino mass
• A Global Likelihood for Precision Constraints and Flavour Anomalies
• Flavor & new physics opportunities with rare charm decays into leptons
• The role of the $S_3$ GUT leptoquark in flavor universality and collider searches
• ${\Lambda }_c\to N$ form factors from lattice QCD and phenomenology of ${\Lambda }_c\to n{\ell }^{+}{\nu }_{\ell }$ and ${\Lambda }_c\to p{\mu }^{+}{\mu }^{-}$ decays
• Charm Physics Confronts High-$p_T$ Lepton Tails
• A near-minimal leptoquark model for reconciling flavour anomalies and generating radiative neutrino masses
• Minimal Flavor Violation with Axion-like Particles
• The New Physics Reach of Null Tests with $D\to \pi \ell \ell$ and $D_s\to K\ell \ell$ Decays
• A clockwork solution to the flavor puzzle
• Null tests from angular distributions in $D\to P_1{P}_2{l}^{+}{l}^{-}$, $l=e,\mu$ decays on and off peak
• Exploiting CP-asymmetries in rare charm decays
• Constraints on charmphilic solutions to the muon g-2 with leptoquarks
• Observation of $D^0$ meson decays to ${\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ and $K^{+}{K}^{-}{\mu }^{+}{\mu }^{-}$ final states
• Theoretical and experimental status of rare charm decays
• $D\to \rho {\ell }^{+}{\ell }^{-}$ Decays in the QCD Factorization Approach
• Coloured Scalar Mediated Nucleon Decays to Invisible Fermion
• Charming Dark Matter
• From B-meson anomalies to Kaon physics with scalar leptoquarks
• Measurement of angular and CP asymmetries in $D^0\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ and $D^0\to K^{+}{K}^{-}{\mu }^{+}{\mu }^{-}$ decays
• First observation of the decay $D^0\to K^{-}{\pi }^{+}{\mu }^{+}{\mu }^{-}$ in the ${\rho }^0$-$\omega$ region of the dimuon mass spectrum
• Disentangling QCD and New Physics in $D^{+}\to {\pi }^{+}{\ell }^{+}{\ell }^{-}$
• New Physics effects in charm meson decays involving $c\to u{l}^{+}{l}^{-}(l_i^{\mp }{l}_j^{\pm })$ transitions
• Coloured Scalars Mediated Rare Charm Meson Decays to Invisible Fermions
• Rare ${\Lambda }_c\to p{\ell }^{+}{\ell }^{-}$ decay in the relativistic quark model
• A comparative study of the $S_1$ and $U_1$ leptoquark effects in the light quark regime
• Constraints on Scalar Leptoquark from Kaon Sector
• Angular analysis of $D^0\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ and $D^0\to K^{+}{K}^{-}{\mu }^{+}{\mu }^{-}$ decays and search for $CP$ violation
• Flavor Physics at the CEPC: a General Perspective
• Exploring charm decays with missing energy in leptoquark models
• Search for rare decays of $D^0$ mesons into two muons
• Pinning down $|\Delta c|=|\Delta u|=1$ couplings with rare charm baryon decays
• Effective field theory analysis of rare $|\Delta c|=|\Delta u|=1$ charm decays
• Correlating New Physics Effects in Semileptonic $\Delta C=1$ and $\Delta S=1$ Processes
• Search for lepton-flavor violating decays $D^0\to X^0{e}^{\pm }{\mu }^{\mp }$
• Looking for New Physics via Semi-leptonic and Leptonic rare decays of $D$ and $D_s$
• Impact of $b\to s\ell \ell$ anomalies on rare charm decays in non-universal $Z^{\prime }$ models
• $S$-wave contribution to rare $D^0\to {\pi }^{+}{\pi }^{-}{\ell }^{+}{\ell }^{-}$ decays in the Standard Model and sensitivity to New Physics
• Search for $D^0$ meson decays to ${\pi }^{+}{\pi }^{-}{e}^{+}{e}^{-}$ and $K^{+}{K}^{-}{e}^{+}{e}^{-}$ final states
• Search for resonance-enhanced $CP$ and angular asymmetries in the ${\Lambda }_c^{+}\to p{\mu }^{+}{\mu }^{-}$ decay at LHCb
• Scalar dark matter, Neutrino mass and Leptogenesis in a $\mathrm{U}(1{)}_{\mathrm{B}-\mathrm{L}}$ model
• Prospects for discovering new physics in charm sector through low-energy scattering processes $e^{-}p\to e^{-}({\mu }^{-}){\Lambda }_c$
• Naturalness from a Composite Top?
• Search for the Rare Decays $D_s^{+}\to h^{+}(h^0)e^{+}{e}^{-}$
• Searching and identifying leptoquarks through low-energy polarized scattering processes $e^{-}p\to e^{-}{\Lambda }_c$
• Probing QCD dynamics and the standard model with $D_{(s)}\to P^{+}{P}^0\gamma$ decays
• Up-type FCNC in presence of Dark Matter
• Recent progress in decays of $b$ and $c$ hadrons
• Search for the rare decay D${}^0$ $\to$ ${\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
• Rare B, D and K decays, radiative and electroweak penguin decays, including constraints on $V_{td}/V_{ts}$ and ${\epsilon }^{\prime }/\epsilon$: Summary of CKM 2018 working group 3
• Null test searches for BSM physics with rare charm decays